 Both were convicted at trial, and sentenced to death.Dereham and his friend William Damport were tortured in an attempt to wring confessions from them concerning Queen Catherine's alleged adultery, and on 10 December 1541 Dereham and Culpeper were executed at Tyburn.On the same day the Dowager Duchess was again questioned, and admitted to having promoted her niece as a prospective bride for the King while having knowledge of her prior misconduct, to having persuaded the Queen to take Dereham into her service, and to having burned Dereham's letters.